*{
    padding: 0;
    margin: 0;
    list-style: none;
    box-sizing: border-box;
}
img{
    display: block;
    margin: 0 auto;
    width: 50px;
}
html,body{
    width: 100%;
    height: 100%;
    background: rgb(55,123,250);
}

h3{
    line-height: 80px;
    color: #FFF;
    text-align: center;
}

.box{
    width: 402px;
    height: 430px;
    background: url(https://www.jq22.com/demo/vuelottery201910160013/img/k1.png) no-repeat;
    background-size: cover;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    padding:  15px;
}
.item{
    margin: 10px;
    padding-top: 15px;
    width: 104px;
    background: #FFF;
    border-radius: 8px;
    text-align: center;
    height: 104px;
    line-height: 30px;
}
.btn{
    margin: 10px;
    width: 104px;
    background: #f00;
    border-radius: 8px;
    text-align: center;
    height: 104px;
    line-height: 30px;
    color: #FFF;
    border: 0;
}
.btn h4{
    font-size: 28px;
    line-height: 50px;
}

.checked{
    background: orangered;
    color: #FFF;
}

.grey{
    background: grey;
}

.mark{
    width: 100%;
    height: 100%;
    position: fixed;
    left: 0;
    top: 0;
    background: rgba(0,0,0,.7);
    padding-top: 120px;
}

.con{
    width: 300px;
    height: 300px;
    background: #FFF;
    border-radius: 8px;
    padding: 25px 10px 0;
    margin: 0 auto;
    text-align: center;
    line-height: 30px;
}
.con h5{
    color: #F00;
    font-size: 18px;
    
}
.con img{
    width: 100px;
}
.ok{
    width: 100%;
    height: 40px;
    background: #F00;
    color: #FFF;
    border-radius: 5px;
    line-height: 40px;
    margin-top: 30px;
}

